from selenium import webdriver
import time

driver = webdriver.Chrome()
driver.get("file:///D:/FourthBro/test/WebUI/%E4%B8%8B%E6%8B%89%E6%A1%86.html")
driver.maximize_window()
time.sleep(2)
driver.find_element("css selector",
                    "body > select > option:nth-child(3)").click()

time.sleep(2)
driver.quit()
